Leather-working machine



July 6,1926. 1,591,285

F. D. CLEMENT ET AL LEATHER WORKING MACHINE Filed March 6. 19 9Sheets-Sheet 1 July 6, 1926. 1,591,285

F. D. CLEMENT ET 'AL I LEATHER WORKING MACHINE Filed March 6, 1924 9Sheets-Sheet 5' 1186 0226 fwezz? F. D. CLEMENT ET AL LETHER WORKINGMACHINE Filed March 6, 1924 i 9 Sheets-Sheet 4 k/Ivitnfj? 0719 ,lItcrggl! wwz? July 6,1926. 1,591,285

F. D. CLEMENT ET AL LEATHER WORKING MACHINE Filed March. 6, 19 24 9Sheets-Sheet 5 July 6 1926. 1,591,285

V F. D. CLEMENT r AL LEATHER WORKING MACHINE 0 Filed March 6, 1924 9Sheets-Sheet 6 July ,1926. 1 1,591,285

F. D. CLEMENT ET AL LEATHER WORKING MACHINE Filed March 6, 1924 9snags-sheep v July 6, 1926. 1,591,285

F. D. CLEMENT Er-AL LEATHER WORKING MACHINE Filed March a, 192 9Sheets-Sheet s w my July 6, 1926. f 1,591,285

F. D. CLEMENT ET AL I LEATHER WORKING MACHINE Filed March 6, 1924 9Sheets-Sheet 9 Patented Jill 6,1926;

'm-ns'seorrnsntrrs, a coarommon or .MASISAGHUQSETIS;

" LEATHER-WORKIN MACHINE; i f I invention relates to inachines for operating on leather, moreespeoially for put-. ting out or setting.Forbest resultsthefhide' should ;be s tretched from .the back toward thebelly and ininclineddirections toward the shoulders and, flanks:Machines hither-f to used to effect this-operation have not 'beens0-;;-constructedthat. the stretch; could ef fected in themostadvantageous man-nerg and;

it. has usually been necessary to runthe: skin through the machine]twice. in order that all ofit' maybe-treated; There-has also. commonlybeen" no1neansprovided-for securely hold-ingith'e leatherlin positionfor the treating tools to operate. thereon so that often the, skin hasnot passed through the;

. machine in the intended-or gropergmanne-r;

Furthermore it; has-generally been impossible for Ltheoperatortoseetheskin while it is being :1 operated upon so that faulty opf erat-iontofthe rnachine is not'noticed' until tion to be easily manipulated'b'y theoperator passes upwardly baek of the leather workingmechar'lism,comprising reyolvingffiuted roll-f ers and apressureapl-ate which act-tostretch the. leather in theaproper'directions to re V move substantiallyall thexliquor therein and:

setiithe 'graine In order to decrease the'eX- tent of motion necessary:for the; action-of the bolster, therollersiand' pressure' plate are;'caused to traverse in the opposite direc tion to the bolster,butzthroughout this :mo-z- V tion the portions of the'leatheru-ntreatedgat any particular time are easilyi accessible to,

- examination and manipulation by the -oper atorl This double motionalso permitsgthe a rollersandfpressure member to act asaicoun-gtel-balance for the ,weightfofthie bolster so thatfthere is amaterial-saving in thepower; required fo'r thetreating operatien. Ass'o'on as the parts have traversed sufli cientlygfthei Pr s rtherebetwefe i ,ie1eaed, th s therefore, the

and treating mechanism are returned to their manners n. o nME'Nn-onwInoH E sTErg-"AND O N ag mmmg ,jo lemming-i Q; VMASSACHUSETTS;ASSIGNORS TO WHITNEY MAoHrNEcmlErAN m WINCHESTER; r

former: pos tions, the clamp, beingv removed; frol'n the bolster, andthe machine stops auto mat callyiso that the treated" hide may; be:

removed and: an untreated hide plaged' in 51131011; 1 H u 7 For a; rnorecom leteunderstandingofthie inventlon, reference may behad to theVac-YOmpan'ying drawings .which Figures and 2 are 1- elevations;respectively,fofathe machine.

tion.

lines and 5 5, pectively, ot Figure 3-; Elgure 6 1s. a 'fragmentarylearelevation- Figure 3 is; fragmentary front; elevaiw Eiguresf4'5' areverticaliisectigonsgon of the-right hand end portion of the machine 7Figures and, 8 are, somewhat diagrammatic details'showing certainfof theparts v V during theoperative traverse-of the bolster and after theend;oii, such' traiierse,:. respec;'

even

Figur 9fis a fragmentary elevationshowing the. manner in which thetilting 10f the V bolster at the starting andlstoppingfof the. I:Inachineis'efiected."

Figure. 10 is adetail'iof and."-

brake mechanism Figure 11 is a longitudinalsection'through 1 theadjustable toggle.v

Figure 12/ 1s a detail showing the connections to a rearfluted rollen; I

Figure 13 is a detail showingsoine of'the parts shown in'Figure 51in"difie'rent relative positions. 1 V.

Figure 14 is a 'det ail'of a" cable connection}:

of a fluted roll and--- atively,

9-0; Figures15 and .16aredetails in elevation y;

pressure. plate, :res peo.-'.-

Figure 17 5 represents al side of leather showing the directionsjof thestretching,

perposedon: each of these sideframes; are

sho wn-as spaced apart. by: a channel beam 195 v forces;appliedtheretoinithe-operatio n of J comprises ai pair a r 7'upperiimzerted' u-shapedside frakinesa and. l i 4 bolted thereto,TIhe-lowersidevframesare adjacent: their lower edges, a channel beam 6,7

at their upper rear portion and' a tubular,

x connector 7. in the lower rear corners. The 1 v upper; frame membersare spaced by meansv i of a paieot channels ,8- and; 9s at theforward-1.

I and rear edgesof these members. The chainml member is fixed to eachlower side frame member by means of a pair of brackets 10. Thesebrackets are each formed with. awertical slot 11 therethrough each slotforming a guideway for the lower end of a track beam '12 hung on a pivotshaft 13 extending inwardly adjacentthe' upper rear portion of the topside frames 3 and 1. Each. track beam has a guide railportion 14 on itsforward face to slidably receive a carriage 15; At the upper edgeof'eachcarriage is an outwardly extending lug 1.6 peri forated for thereception of a bolt 17which is adj'ustably' fixed therein by means ofnuts 18 at either end or the lug: and a lock nut 19 at one end. To thisbolt 17 is fixed the lower end of a chain 20which passes over a largechainwheel 21 fixed to a shaft 22 journaled in a bearing 23' at theupper end of the corresponding side frame members 3 or 4;. The oppositeend of each chain 20 is made fastfto acarriage 25 supporting the Yleather working instrumentalities, this car riage sli'ding on aninclined way 26 made fast to the'inner faceofthe corresponding lowerside frame members 1 or 2, the two ways 26 being 111 opposed relat on onthe two frame members. The guideways 26 are parallelwith the trackbeams12 when the lower ends of these track beams are 1 swung forwardly aswillbe later described.

In order that the carriages 15 and'25, may 7 be: givenpositive-movements in opposite directions, the upper end ofa cablef27 1sfixed vto each carriage '25, these cables passing about a pair ofsheaves 28 adjacent the lower forward ends of the side frame men'ibers,1 and 2 and then upwardly where they are each fixed to a sheaf 29 fixedon the shafts 22 as best illustrated iuFigure 1 1-.

Each carriage'lt'). above referred to has pivoted'thereto at 30 abolster'35 overwhich the leatherftobe treated is placed. In order to resisttheheavy pressure to which the bolster is subjectedby the leatherworking; instrumentaliti'es' 1t is very rigidly conitcompri'sesa seriesof I beams parallel spaced relation by spacers 37 placed structed Asshown best in Figures 'and 5 36 held in therebetweemfie bolts .38passing through thebeams; and spacers to hold the parts as- 'sembled. 'Aplank facing39 is fixed to'the forward face of these elements, thisbeing covered by'a suitable "surfacing blanket 40. which eoverstheentire forward face of the bolster ;andis brought down in inclined po'sition as shown at 41 back of the'narrow rounded upper edge42. At thelower edge ofathe bolster at each end is an extension 15 7 ca'rryingfa'roller t6 which is adaptedto ride onthe forward face of'a flange 47extendinst inwardly from the'adjacent track beam 12 between itsifrontandrear faces and subv stahtially'"parallel thereto. lVhen'the carriage 15is near its lower limit of motion the rollers 46'are below the lowerends of the flange 47 and hence are not guided thereby.

The pivots 30 of ;the bolster, however, are.

formed as trunnions fixed thereto and out- 70 -wardly of their hearingsin the carr ages 15 each has fixed thereto an arm 50 having aroller-51,journa-led at its lower end. This roller may pass betweenspaced jaws 52 and 53 of a racket 54 pinned at oneend as at 55 to a boss56 extending from the upper side of the corresponding lower frame mem--V bers 1 and 2 and by a bolt at its other end thereto as at 57. Thespace between the guide jaws 52 and 5 3 is so shaped that when theroller51 is at the lowerend thereof thebolster is rocked to substantiallyvertical} position as'shown-in' Figures 1, 2, 4, 5 and 9/ As thecarriage 15 is moved upwardly on ;tain the bolster in this inclinedposition.

Pivoted at the upper edge'of'each carriage 15 at 60-between the trackbars 12 is'a lever bracket 61 having an inclined upper face 62 to'whichis fixed'a plate 63 joiningthetwo bracket arms, this plate having itslower edge'64 concaved and covered witha suit-'- able surfacing 65 t0form a clamping member engageable with the upper rounded edge 05 7 .4-2of the bolster. As the bolster swings rearwardlythe rear-portion of thisrounded edge 42 engages the concaved member 64 and rocks theclamping-member down into engagement with the leathervextendine; over110 't-he'upper edge ofthe bolster. This rocking motion of the leverbracket 61 is resiliently opposed so that the leather may be firmlyclamped. For this purpose there is-pivoted to each bracket leverbackwardly of j the 115 pivot 60 at 67 a link .68to the end of which iis fixed a threaded bar69p On the thread edportion of this bar is a nut70 andsurrounding this bar between this nut; and a lug 71 on thecarriage-15 is a'coil spring-72.120

This'springvacts-to force the bar upwardly so thatfwhen the bolster isin its tilted posi tion, the clamping bar. 63 is pushed firmly againstthe side ofleather extending over the edge 42' or the bolster, thisposition of 1 the partsbeing illustratedfin dotted lines in Figure-9. 7f

7 During the upward movement of the bolster and the clamp. which. isefi'ectedby theupward sliding of the carriages 15, the 130 1owe -ends ofthe track: heams'IQ are'jheld" atinee-5 forwardly so. that the worli onthe bolster and'S The tracklbeams l2haveirearward'ly extending lugs801near them-lower ends to which are pivotally connected the forwardends of toggle linksSll, Tfotherear end of the links 81 are pivoted-"thetoggle links 82 and the rear ends of these toggle links-are fined toj'arock, shaft: 83' extending transversely. of the machine and journaledthe "lower'sid'e framesl and 2: rocking this sh'aft'it is; evidentthatthe linkssl and' 82"] m be straightened tofl niove and hold their fbwardpesinons, or by rocl'ring the d rection of the 'arrowc.111 F gure 8,.these links are brought; out of substantlal a'l1ne-.

locked the lower" endsofthe track beams'in nient and thje track beamsare broughtto their rearwardiposition Within the guides 11.

,- As shown lILFi'giim' 11 the link 82 a" pair, of integralstop lugs 85and 8 6 I which engagef'onjlugs 87-fand; 88 onthelinkf 8'lto limit the jrelative pivotal movements Of isformedin two telescopingsec t ionsOO andare held'togetheriin adjuste P i ioh. 3? ol s- 9 1W 1i1ii Pass; h i k sls ,98' n. e 7 sectio 'le 'cth l sj. I initliesectiony 902; The rear endof section a 9 l 1isifp vid wi a seeti9 E-i 4 i ept b e i ii shaf e z aniv ap; p t

com letes the clamping engagement for; this slief T roug i ears; 9, 10 ts leer-P ate are passedfladjust'ing bolts. 97 I hav ng lock nntsfj9 8thereon," the forward. ends of these t-hje, p rposel'of" ad sting thedistancefbfe-f I .Outw rldlyjof the lower framemembe 1.

- f i i sh t i 1 ".fi et1' her ef'an' IT I E Q outer 7 end oi whichpivoted to the new t heflurr en 5E m hi e" where itis' pivoted at'lOQtothe intermediate portion of an arm103 fulcrum'edatoneendf at 104i I a;fiized bearing .1O 5I'P'lhe free} l dweifi end of a rod 1015f 'Thisjrodpasses endo fithe am; 103 is positioned within th'e Path of n e. 06J' 1d Qn P n' 07f d outwardly from a gear wheel 108 ex d M u c led; 13y the;18a .handglshaft- 22. mThls get 1087: okd r we' i h m rage b'enaththe'extended'end era-e ivot 102. shown injFigu re8, ,On rotationiofcarriages 15" to 'de'sc'end thej roller "106* chsha ft' 22 has fixed.thereon' outwardly of the gages the free'endof the arm103 as shown [miFigure '2, depressing the rod 101' and rocking the shaft 83' ina'fdi'rection to straighfen the toggle -;links"81' and 82 so that lowergends of the track beams 12" are-*il'roved" forwardly; -On rotation ofthe gear 108'in tl'ieopposita direction the arm 109 0 011165tiif'tlieposition; asshown in Figure 8, where it engages beneath the pin102 and raisestherod 101, breaking the toggle and rearward'ly. Thislater action is effected when the bolster has reached its desire'd'upwper limit of }-mo tion as will later he dc scribedr' The toggle may alsobe broken by the 'operator'at any time. during the upward a movingthelower ends of-the track beams 12" stroke ofjthe bolster. F or thispurpose a treadle 110 is fulcrumed atl ll'to the frame member 1, the'rear' end of this treadle'passing beneath the pivotal connection of therodflQl with the: "arm: 100. By exerting? pressure on the outer end-E112of this treadle 'it is-evid'ent that it'sfinner end will beraised an'd'he' arm 100 rocked toibreak the toggle. The gear, 108 above referred to(Figure 2) i meshes iwith a pinion 115 fixed-tea shaft 116; Thisshaft'f'extendsacross the width- 1 of the machine and carriesadj acentits op- 1'17 meshing with a gear 118 c 'ar'ried by the right handsh'a'ft22, I By this means the shafts22 are causedto -rotate"inun-isonso thatthe carriages 1 5 are-*cause'd to move simultaneously and both} ends ofthe bo1- ster are given the 1 same raising and lowering movements. Forth'e purpose of; rotating thev shafts 22 to elfect traverses of the carab'earing:123 (Fig-tweet) at the rearof the uppe frame member 4'. Fixed]to rotatewith the pinion 1 21 is a sprocket Wheel'125' overwhieh'passesfa drivingehain l26. {The 4 lower portion ofgthis-chain,--pa'sses' I about u 21.? sprocket wheel-127' on a jack shaft 128and at an-interrnedi'ate point it 'rnay-pass over' anidler sprocket'wheel 129. 1 At '130' is shown the main. drive shaft of the' machine;carrying a drive pulley 1'31jat itsfrig-ht handroot ri'afgesf 15 land 25the shaft 116 arranged to be driven. -At'its'right'hand 'endas' show-n.'in Figures 1 and 3 this shaft 116 carries a gearwith'which meshes apinion 121- journal'ed'on a -"s'haf-t l22 which is fi Xed'in end. Thisdriveshaft Figure 6) extends through fa. journal in the side frame 2 andits-opposite-end is'jjournaled in a bearing 132 in an'dntermediate framemember-133 fixed at its up'per end to" thecross frame member e nd at itslower endto'the 'tubu-' lar connector? or pipe -7. This 'shaftrl30'carries 'a pair of pinionsi135 a'nd'1365, The pinion 136" meshes withfagear 137 journaled on'the shaft 128 and the gearmeshes with an;intermediate pinion: 138' which meshes with" a: gear 139 also b Ijournal'e'd' nx he shaft 128. Fixed" to rotate" with:

" bearing 152 fixed to the cross beam 6, and

- the gear friction clutch and fixed to rotate withzthe gear 139is asimilar element 141 of a second friction clutch. Between these'clutchele' ments 140 and 141 is a clutch'collar 142 slidably keyed to the.shaft 128 '(see Figure 7 10.' The opposite ends of this clutch col- Ithat through the gear connection of the drive shaft 130 directly to theclutch element 140 this element is given a rotational direction oppositeto that of the shaft 130 while the clutch element 141 is given movementin thesaine direction as theshaft 180'due to the idler gear188interposed between the gears 135 and 139. It will alsobe noted that vthe, gear 139 is smaller than the gear 137' thus causing the clutchelement 141 to rotate at a'slower speed than the clutch element 140.This slower speed clutch is operative during the upward movement of thecarriages15 and the downward movement of the carriages '25,*which is theoperative motion of the machine, while the opposite more frapiddirection of motion is idle as will later be described. The collar 142is moved axially ofthe shaft 128 by "means of a shlp- 'perar m 145(Figure 10) pivoted 'at'146 to a collar 147 journaled'on the collar 142between the flanges 148 and 149. "The outer end of this shipper arm 145is fixed to a vertical shaft 150, which extends substantially the fullheight of the machine, being journaled in a bearing 151 fixed to. thepipe 7 at its lower end in ain a bearing 15-3 fixed tothe cross beam-9.This shaft may be. rocked by the operator to, control the machine, forthis purpose a lever 154 being fixed thereto at its rear end andextending forwardly'where itmay be grasped by the operator infront ofthemachine (see Figure 5).

In order-that the motions ofthe car-r riages may be stopped whenevertheclutch collar 142 is moved to its mid position to disconnect bothclutches, an automatically acting brake mechanism has been devised;Referring. more particularly to Figures 6 and 10, it will be seen thatthe shaft 150 has fixed thereto an arm 160 having a cam face 161 at itsouter end formed witha central depression 162 and arcuate portions 163at opposite sides of this depression. Riding on this cam face is aroller 164 carried at one 137 is one/element 140 of a" roller 185thereon.

end; of a leverarm 165. This lever arm is pivoted at 166 to a bracket.167 carried by a slot 168in the opposite endof this lever 'arni is the,outer endof a rod 169 which passes through; the bracket 1'67 and theframe member 6"and is fixed at 170 to one {611d or a brakeband171'partially enclosing: a brake drum 172 fixed'to the shaft 128.

The opposite end of this band 171 is brought the'frame member 6, andextending through i up and fixed at 17 3 to the outer face of thebracket 167 as shown in Figure 6. A spring r 175 surrounds the rod 169between the outer,

face of the bracket 167' and a washer 176.

held in adjusted position on the rod 169 by means of a; nut 177 threadedthereon. This spring urges the rod169 rearwardly to cause thebrakelband17l-to be tightened about the drum 172, thus applying the brake. :Thelever arm 165, however, bears against, a

washer 178 held in position by a pair of lock nuts 179 threaded on therod 169 outwardlyof the nut 177 and whenthisleverarm i 165 is rocked to.force itsend'against the:

washer 178 the rod 169' ispushed forwardly, releasing th'e'band 171 fromthe brake drum;

When the roller .164 on this lever engages in the notch 162 of thecamface, the opposite end of this lever arm is free to be movedrearwardlyby the spring'17 5 and thelbrake band is tightened'abouttheodrum, this position oftheparts being when theclutch 001-,

lar 142 is in its mid position. When this.

collar is movedto' either clutching position one or the other ofthelarjcuate portions 161 and 163 of the arm 160 eng'age'the' rolleri164, whereupon the lever arm 165 is rocked to apply pressure against thewasher 178 and move therod 169 forwardly to 'releasethe brake. It willthus be seen that-whenever either clutch isin operative position thebrake is released, and, when both clutches are disconnected, the brakeisapplied.

Provision is also made for the stopping of'the machine automaticallyafter a single up and down traverse of the bolster. For

carriages 15, as shown in Figure "5, has

journaled thereon, a cam rol1er.185,'which when thecarriage is in itslowest position,

impinges on a dog 186 pivoted at 187 on this purpose the lower end ofJoneof the the bracket 184 at- .the'inner side'of' the frame member 2,this end of the dog'being' urged upwardly by means" of a'spring'188'fixedthereto below its pivotandto, a fixed point of the machine. Thebracket member 184 has an upstanding guide lug "189.-in which isslidable the forward end of a rod, 190. This rod has adjustably fixedthereto" a collar 191 having a cross pin 192 therein which may becontacted by the rear edge of the dog and moved rearwardly when this,dog is depressed by the engagement of the V The rear end of the rod ispivotedatf193 to the lower end of anarm 194 journaled onlthe shaft 83!.The

upper end ofjthis arm' 194,,is7forrned with: a hooked portion 195inlwhichl, engages a pin 196 extending laterally froin an; arm

, 197 fixed at the iorward end of a link 198. "The rear end ofthe'link198 is bifurcated at 199 andbetween the forks is. pivoted one endpfalink200,]the other endof this 11111;

being i'ormedzas a? sleeve 201 'which is fixed.

to the shaft 150. 'YAs the "carriages lti reach" their lowermostpositions, therefore, the dog 186' is, rocked, novin'g the rod 190 rear-7 'wardly and causlngthe link 198 to be drawn I forwardly, rockingtheshaft 150 to (hung the clutch collar l4-2to its mid position whereuponthegrnac'hine stops. .This-arm 194 is positioned. adjacent a seg1nent205 fixed to the shaft 83, the member 197 eX' tending'th'rough a slot inan upper convexed wall meniber 206 thereof and having alaterallyextended" portion 203 riding on its uppersurt'ace. At theforward end of, this wall member is [an upstanding lug 207,

V which when thetoggle broken, is' swung r earwardly into contact withthe upper end v of the elementv 197 'This -breaking 'of the toggle takesplace when the carriages' 'l'fi are near their -upper; limit of motionthe impingement of the lug 207 causes the lug 198 tohe pushed rearwardly(see Figure 13), rocking the shaft .150 in a direction-to unclutch the.elements 141 and 144:]and clutch the elements l l0hand 143, thusreversing the direction of rotation of the shaft 128 and consequentlystarting the .carriages 15 on their downward mot-ion. Beforefther'carriages have reachedtheir lowest position, but after the holsterhasbeen removed from operative relation to the leather workinginstrumentalities, the roller 106 has engaged the? arm 103 tandlstraightened the tog 'le,

7 element 197, the parts then being in position sothatwhenthe r-od'190is moved rear-1 w'ardly the vnnemher197may drawn for.- wardly by the;rocking of the arm ;194 to its mid position (as shown in Figure whereboth clutches are unclutched and the machine is stopped. v 4

a The leather working riagesare pivoted at 220 and 221 adjacent endsof'arms 222 and 223, the outer ends 7 of these'arins' have "pivotallyconnected" thereto links 22land 225'to which are fixed the rearendsofthreaded rods226 and 227.

Each rod has threaded thereon an abutment nut 228 against which bears awasheri22 9 Against this washer presses one. end; of a spring 230surround1ng-fthe rod and; th s springbears at its outer end against alug 229*, extending Joutwardly frornu the ca riage; A washer andnul; 231on the outer "which are fixed fl thus rocking the seg1hent205: forwardlyso that the lug 207 is free'from the :inechanisin' cornprisesinstrumentalltles carried by the carriages25-as follows: At each end ofthe ear face of [each 229 torn stops to liinit these steps; These "arms,:2221'a'ndw 223jea'ch ave e g d 0P V 1iiigs 235 which are jou naiedsinuses? ;-and 268' site spiral directions 't length as -illustrated 1 VI thus, forming a series Jot ,spi'1 al 1ribs 2&0,

he n whis vin y ieirgageith'ei leathe tendingdown' the-forward. f the b"Y ster when in" operatiite relation thereto 7 i These rollers'are;rotated and"forthisipui pose driving connect1ojns] shown 1n Figureschain 254-;fpassing' thereOV erQ which also" le. fra e 2 'th e1 drivefsfhatt 130 has piuoted-thereonalinkz-250; andiinfthe, of this; link.is', shaft 251,1lOnfthisyshatt r is v j ournaled a. pair) of sprocketwheels (25 2 a d Sprocket wheerete has sprdcke end passes'about asprocket wheel 2 fixed fto the drive shaft." 130. Pivoted on; .--thei251 j.s'"thelower end of a linl "25 6,' the' upper end pfwhich isflpiuoted on a shaft 2 :7 carr ing the lower. 011er1238. out: wardly" ofthis link 250 the shaft 25 7" has fixed; thereto a." Sprocket 'wheel258over which passes a chain 259 whiclLaB passes;

over-the sprocketiwheel 25 3; u'lnthis con 7 sanction it s eyidenti thatthe harp 257;

s d iven $1 11 the main drivef'shaftlregaifdf less or .t 'i siti' h crri e .5;- li

1inks256 'anditz o maintaining gal-e j driving ain in r p' iving e t n"tear times At theiopposite end of the'shaft 257; is, .tified a fSprocket wheel 265 over which passes ech ai n. 266: see Figure, 2)"whichengages over 1 a h sprocket wheel 2 267] fixed. to

a sha ft 26S carryingftheSupper fluted roller 239, The sproeketwheel'265 is preferably of greater ,diameter than t the wheel1267j in orde rto" drive the. upper roller faster than the lower rolle'r't'and give aburnishingefi'ect i to e eat r-4 The ppe ie ay a so. have nio r'e flutesthan theilower roller. f V Between the rollers238 and 239 is a; ribbedno a pressure plate 27 0,";the, ribsgl thereon fbe-jr ing indiagonalgforination as shown in Fig; ure 16, the dlrectlon of thedlagonal. reVers-.

i ng atitsQcenter ofjlengthh This pressure plate ay 'jcomprise alchannelbar 272 to l i which the .ribs' 27l alre applied, ,as, shown these ribsclornprisingxplait es 27.3 -fiXed to the outer faceof, the channel 272by,jine'ansfof end to the rearv end, of a cast block 275 haiinggstrengthening and ,st-ifiening tribs 2,76

thereon; (see Figures 3, ;4;and 5;) of hes blocks 27 1 sl dab eg ne. rr2 and each has a pair of laterally extending lugs 277, while rearwardlyof these lugs are-fixed lugs 278 on the carriages through which arethreaded abutment screws 279to fix tlie rearward limit of motion of thepressure plate; The pressure plate is urged inwardly toward these boltsby means of springs 280i reactingbetween the lugs 277 and cup plates28lrotatably carried at the inner ends of adjusting bolts 282v threadedthrough'cap plates283 on the carriages 25. It will be seen, therefore,that both the rollers" and fthe pressure plate are urged rearw'ar'dly'to an adjustable extent so that" when thebolster carrying the leatherthere-- on passes'u'pwar'dly with the track beams 12 swung forwardlythey press against the leatheri and' work it away from the upper edgewhere it is clamped to the top edge offt'he bolster. Due to the diagonalarrangement of the ribs on the fluted rollers and the'pressureplate, thepressure is exerted downwardly and diagonally outwardly in the mannerillustrated by the arrows b in Figure 17,1the line of clamping'oftheleather i being shown by the dot and dash line 0- 0.

' This line is substantially parallel to and closely adjacent the backedge of the side of leather so that; the pressure is exerted toward the"belly and the shoulders and flanks, which is the direction in'which theleather should be stretched and the grain laid:

- A narrow edge of the leather may extend down the inclined rear upperface 41 of the bolster and if desired"mechanism may be employed fortreating this portion of the leather 'atjthe same time that the portionextending down the forward face of the bolster is being treated. Suchmechanism is shown best in Figures 4 and'12. Referringito thesefigures,a bracket 300 is carried by the beam 5, thisbracket having apair of upwardly'extendin'g spaced arms 301 within which is fixed ashaft 302. Pivoted on this shaft between the lugs 301 is a rigidupstanding arm 304' at the upper end of'which is journaled a shaftcarrying a fluted roller 305 similar in construction to the flutedroll-' ers 238 and 239; It will be understood that there is acorresponding arm; 304 at the other side of the machine for'supportingthe roller 305 Fixed to each carriage 15 is a member 306 having a cam"path 307 thereinwithin which rides a roller 308 carried near the upperend of an arm 309' also journaled on the shaft 302 within the bifurcatedlower end of thearm 304. Beneath the roller'308 pivoted at'310 is theforward end of a-rod 311 which extends through the arm 304andicarriesthereon a spring 312 bearing between a' washer 313 resting:against the face of the arm 304 and a washer'314'held in position onthe 'rearend of the rod 311 by meansfof'a; nut 315 This spring acts tourge the 304 towar'd' the arm 309" t as far as'is permitted by abutmentscrew 316 threaded through the arm" 304 and against which a lug 317 onthe arm" 309 impinges. This acts to press the roller 3051 against theleather extending downthe in-, clined face41 ofthe bolster after thebolster has been tipped back and the work'has been clamped thereon bythe clamping plate 63.

The cam path 307 'is so shaped that this roller is brought down againstthe face 42 bygthe time the bolster'has'raised sufliciently to befullyjclamped, asshown in dottedlinesf in Figure 7. As the bolster movesfurther upwardly the roller is caused to move down this inc'linedfaceand oii the edge thereof at which time it reaches the lower verticalportion of the slot 307 which holds it away from the rear'face of thebolster. This roller 305 isrotated. For this purpose a sprocket wheel320 isfiXed to rotate therewith at one end over which passes a sprocket.chain 321 which passes about a sprocket wheel 322 journaled on the shaft302 at one side of the machine. Fixed to' rotate with this sprocketwheel 322-is a similar wheel 323' over which passes a chain 324 whichengages a sprocket wheel 325.on a shaft 326. "This shaft carries a' gear327 Vmesh'ing Witha pinion 328 on the main drive shaft 130. It is onlynecessary to use sprocket-wheels 322 and 323 at one side of the machine.v

When the machine isat rest the bolster 35 is at its'lower positionextending substantially vertically; The side of leather to be treated isthen thrown over its upper edge, back uppermost, the line 0 00f Figure16 illustrating the portion which lies overthe rounded upper'edge of thebolster. The clutch then having been thrown to the right by'actuation ofthe lever 154, to engage the clutch 141, the carriage's'15 are'caused tomove up the track beams 12' and the carriages 25 are caused to belowered. As soon as the carriages 15 start to rise" the bolster tipsrearwardly, its upper edge 42 engaging the clamp 63 and the bolstertaking the position parallel to theforwardface of the track 7 beams asillustrated in Figure 7. It will be understood that at this timethetoggle links I ioo act to stretch itfdownwardly andlaterally 5 over theforward face of the bolster, the in clined position of the ribs ontheseparts act:

i in Figure 17; reached thedesired upper limit of its motion I and theleather has beenworkecl upon by or the rollers andpressure' plate,;thearm 109 of the shaft 22 raises the rod 101 as 'illus is r the carriages25.. The rocking of; the shaft morass V ingfitogive thelateralfcomponents v to the, thrust. -At the same time the rear rolleracts on the leather extending rearwardly from-the clamp andst-re'tch-esitawayvfrom' the clamp and outwardly as shoWn-byvthe arrows d As soon asthe bolster has trated inFigure 8 and breaksthe-ltoggle so as'to pull{the lower ends of the trackv beams rearivardly as shown by the arrow6.; This moves the bolster 35 away from cooperative relationgto theinst-rumentalities carried by 8 3 also acts through the segment 205 topush the rod .198 rearvvardly rocking the shaft 150 I and causing the vclutch connections to be reversed so that the clutch; 140%143 nowbecomes effective and the carriages l .and aregiven their reversedirection to traverse at a higher rate offspeed than their workingtraverses. As the carriages 15 appreach their lowest, position,thefbjolster is causedz to again assume its'verticalvposition v with thematerial unclamped and thei lovver ends of thetrack beams are movedforwardly again by impingementotthefrolleril Ofi'on the. arm103straightening theitoggle links;

Just beforethe carriages 15 reach their lowator tostretc'h and"pulltheleather asihe may and'stretch'ing the l'eather I aciosssa d face;

see "f t and to; closely] observe the manner in vvllichi the leather isapproaching the orkiinstriimentalities. Should the action beunsatisfactory at any tim'eg he has only, to stepson the treadle toeltectbreaking 'of the toggleand'y'to, move the track bars v back so asto bring the bolster out'of cooperative relation ivith the rollers andIto reverse the direction: of motionfoi the machine to bring the partsbacki'to their starting position. v

Having thus described an embodiment of this invention it should beevident to those slri-lledfin. the art that various changes andmodifications might be madetherein Withlined the appended claims.Werlaim ,outdeparting from its spirit 'or'scope as de- M g I ster during.th-e relative direction oftraverse -1n which sa d roller recedes fromsaid clamp L 1. In; a' machineof the class described,a .bolsterover oneface and edge-of vvliicl a side of leather may be placed, means forclamping the leather against- .sa-i d edge, and means [acting 'during abodily movement thereof relative to said (bolster for drawing "Q2. "In amachine of the; class clamping the leatherjagainst said edge, andleather Working elements movable' bodily relative .to said; bolster; andacting on the bolster over one face and'one edge of which asideofleather may; bejplaced, means-for clamping the leather against saidedge, and

and rubbing down its exposed'surface in .a directionto istretclrand orkthe leather awayffrom said clamping means.

bolster over. one fate} and edge 5f ivhiclt 1 side. of; leather mayajbe; p1aced,' means :fOB

Z0 'leather'von said vfaceduring such inovement. 1 :3; Ina machine oftheclass described,:a

means acting during, a bodily movement 7 thBI'QQfJIQlEIUVQ to sa dbolster forvprogres- V .SlVGly PITGSSHlg' said leather against, saidface soy 4-5111 a mmhine :'0 the "c ass (teamed, a?)

means forclamping the leather tosai d bol ster, leatherworkingmechan sm,and means for moving said bolster j and mechanism simultaneously and inl opposite directions to efiect treatment of the leatheriby said-mech- 5Ina machine of the classfdescribed; a

bolster on which; leather may be supported, means forclamping theleather tosaid bolsteralongi ,onefedge, leather Working mechsai-dholding "means inoperative 1 on the reg verse direction of traverse. a e

bolster on which leathermay be supported,

6. Ina machine of the iclass described, I

bolster on which leather .may be supported, means for clampingtheleather to said bolster; leather worki g instrumentalities includingagfiuted roller, means for rotating said roller, and means-for eifectingsimul- 1 taneous traverse in opposite directions of said bolsterandroller to cause said'roll'er to act onthe leather; a 7. 111 a machine ofthe classdescribechn bolster on Whichleather may befsupported, means forclamping the leather to said bole ster, leather orking"instrumentalities,including fluted roller, means :tor rotating i saidroller, means for effecting simultaneous traverse in opposite directionsof saidbolster and roller, means for-pressing said roller against theleather on-one i'ace of said bolpressing means; inoperative during theopmg means, and meanslfor renderingsaid bolster onivhich leather may besupported,

means for clamping' the leatherto.said boh ster; leather orkingmstrumeutahties 111 tor.efl'ectingsimultaneous traverse in oppoeludingaribbedpressure plate, and means site directions of said bolster andplatejto cause .the ribs of saidplate to press the.

leather against said. bolster andrub t'hs l face thereof. V, r v

' 9. In amachine of theclass' described, a I

ster, leather working instrumentalities in cluding a ribbed pressureplate, means for efl'ecting simultaneous traverse in opposite directionsof said bolster and plate, means for causing the ribsofsaid-plate topress against the leather in the direction of relative traverse to causethe lea'therftobe worked. 2 and stretched awa from saidclamping means,and means for rendering said causing means inoperative during theopposite direction 01 relative traverse;

Y 10. In a machine of the class described, a bolster on which leathermay be supported, means for clamping the leather to said bol ster,leather working instrumental-ities including a fluted roller'and aribbed pressure plate, means for rotating said roller, and meansfor'ellecting relative traverse between said bolster andinstrumentalities to cause said roller and pressure plate'to engage andwork the leather over the face of said bolster from said clamping means.

,11. Ina machine of the class described, a bolster movable upwardly anddownwardly andconstructed to support leather, leather working mechanism,and means for moving said mechanism'in a direction opposite to that ofsaid bolster in proper relation toact on the leather supported thereon.

12. In a machine of the class described,'a bolster 'movable upwardly anddownwardly and constructed to support leather, leather workingmechanism, and means for moving said mechanism in a direction oppositeto that of said bolster in proper relation to act on the leathersup-ported thereon during one direction of relative traverse and out ofactive relation thereto during relative traverse in the oppositedirection.

13. In a machine of the class described, a

V bolster on which leather may be supported,

means for tilting said bolster substantially means for clamping theleather to said bolster, leather working mechanism, means for efiectinga relative traverse between said bolster and mechanism, means forholding said mechanism against the leather as said mechanism movesaway'from said clamping means, and means for rendering said holdingmeans inoperative during its movement in the opposite direction.

14:. In a machine of the class described, a bolster movable in anupwardly and rearwardly inclined path, said bolster when at its lowestposition being substantially'vertical to receive work over its upperedge,

into the plane of said path as it starts to move upwardly therein, amember with movement ofsaid bolster, and work treating mechanismpositioned to treat the work on said bolster during sald' movement; 7

15. In a machine f the class described, a.

bolster movable in an upwardly and rear- 7 wardly inclined path,said'bolster when at its lowest position being substantially vertical toreceive work over its upper edge, means for tilting said bolstersubstantially into the plane of said path as it starts to move upwardlytherein, .a member with which the upper edge ofsaidbolster comesintoclamping engagement to clamp the wort thereonand so hold it' duringthemajor portion ofthe movement of said bol ster, Worktreating mechanismpositioned to treat the work on said bolster during said movement, andmeans formov-i-ng saidmechanism downwardly across the face of saidbolster as said bolster is movednpwardly.

.16. In a machine of the class described,.a substantially uprightbolster memberx over the upper edge of which a side of leathermay beplaced, means to; clamp the leather. alongsaid edge to said bolster, andleather working instrumenta-lities engaging and working the leather atopposite sides off said clamp. 3

17. In a machine of the class described, la' substantially uprightbolster; member over the upper edge of which a side of'l-eather may beplaced, means to clamp the leather {0'0 along said edge to said-bolster,and leather working 'instrumentalities engaging and working the leatherat opposite sides of said clamp and away therefrom. r f

1.8. In a machine of the class described,'a member on which leather maybe supported, a leather working member, means for relatively traversingsaid members,fand means for'holding one of said members in opera;

supports at the end' of said stroke.

20. In a machine of the class described, a bolster on which leather maybe supported, leather working mechanism, means for relatively traversingsaid bolster and mechanism to work the leather during one stroke 7thereof and to idle during the reverse tive position'relative to theother member 110 1 thereof and to idle during the reverse stroke, and adevice for moving the bOlStBIf lDtO wnism, means fori holdin'g said"mechanism and bolster in relative position to causeisaid mechanism toact on leather on saidbolster during one direction of relative traverseand for holding them out of such i'elative'posi-' tion on the oppositedirection of traverse,

position at} any 131011 of traverse.v

stroke, supports for the bolster andjmecha-j nism, and means tunedtomove one of said supports away from the other at th' end oftheworlring strokeend to move said sup" port tOWELI'd the other at theend of the idlingstroke to bring said bolster andmechanism intooperative relation; Y

21. In a 'machine" oflthe class described,

a bolsteron which leather may be, sup ported,

leather Working mechanism, means for relatively traversing said 'bolsterandmechae ism to Work the leather during one stroke operative relationWith the leather working mechanism, said device lncluding means forlocking the bolsterlin'said operative "relaQ tion tiring the Workingstroke. 7 p i 22.111 a machine of the, class descrlbed, a

member on which leather may be supported,

a jmember for working 7 the leather, means for relativelyctraversingsaidmembers to work the leather during one stroke thereof and to idle duringthereve'rsestrokc, and;

means for locking said members in operative relation during :theWorking'stroke.

, '23. Ina machine of the class described, a member Damien leather maybe supported, a leather Workingmember, means for rela: tively traversingsaid members to Work the leather during one stroke thereof and to. vidleon the reversestroke, and means timed to moveone of said members intooperative relation to the other at' the endofthe idling and meansactuable tofmovethe m out of said time. during said one direc- 25. In amachine bolster on Wh1ch leather may'be supported, leather 'WOIkIIIgmechanism, means forrelatively traversing .said bolster and [mechanism,-means for holding said 'mechanism and bolster in relative position tocause said inecha-nlsm to act on leather on said bolster durin g onedirection of relative traverse and for holding them out of such relativeposition on the opposite direction ottr'averse, and means actuable tomove them-out of said 'position at any time" during said one directionof traverse and to return them of the class described, a

to their starting positions of saidone trayerse directi n. Q v a p 26.A'machineiof the class described prising a bolster over which leathermaygbe supported, leather 1 Working, mechanism,

means actuable :tov effect a relative traverse between .saidvbolster andmechanism inboth v directions, means for automatically stopping themachine at theend of eachreturn traverse, fand'meansjactuable-by thefirst mentione-dmeans for. holding said bolster and mechanism ,inposition'for saidfmechanisin' to act on ,leatheron ,sa1d bolsterdur-:--

ing the, first relativedirectlon of traverse 'and for holdingfithen outof such position during the return CllTGCtlQl'rQf. traverse.

-27, *Amachme of the class descrlbed comprising a bolster overwvliichleather may be I supported},tleather Working mechanism,

meansactuable' to effect a relative traverse between said bolsterandmechanism inboth' directions, means for automatically stop-Ypingtheniachine at theiend of'each return traverse; means for holdingsaid bolster-and v mechanism in position for saidmechanisin to act onleather jonsaid bolster dur ng the lust relative CllIQCtlOll oftraverse. and to hold thein outof such position during: the a $7 returndirection 'ot traverse, and means actuable at any time during the firstdirection or traverse for moving-them out of such position. i i

- 28.yAmachine of the class described 'coni-' prising a bolster overwhich leathenmaybe supported, leather orking mechanism, 'means actuableto effect a-relative traverse between said bolster andmechanism in bothdirections, means .for Iautomatically stop ping the macl ine at the endoft-each return traverse, means for holding saidbolster and mechanism inposition'for said mechanism to act on leather on said. bolster duringthe firstgrelative direction of traverse and to hold themout of suchposition during the return direction of traverse, and meansiac tuableatany time during the firstdireotion jol traverse for 'm'cving them outof v such position and ior returning them to stopped position: H o v v29. lira machine of the class described, a

"pair of spaced parallel? track beams each pivoted at one end,abolster'over which leather may be placed reciprocablealong' said trackbeams, 5 leather working mechanism, and means for sw ng ng the-free ends"of said track beams toward said mechanism and so holding themnurmg onedirection of t i traverseof sai d'bolster in position to'cause leatheron said bolsterto be operated on by said mechanism andtor retractingsaid ends and so holding direction of traverse of said bolster.

V y 30. In a machine of the class described, apair 0f spaced paralleltrack beams each pivoted at, one end, a bolster over which them duringthe opposite leather may be placed 'reciprocable along said track beams,means to move said bolster,

means acting after a predetermined extent of lflOtlOIl'lll one directionto reverse the direction of motion leather working mechanism U 7 andmeans for holding the ree ends of said track beams swung toward saidmechanism during saidcne direction of motion of said bolster and actingwhen the motion is reversed "to move said free ends away from saidmechanism.

31.]1132 .'machineofthe class described, a

' pair or spaced parallel track beams each pivoted at one end, a bolsteroverwvhich leather maybe placed reciprocalole along said track beams,means to move said bolster, means acting after a predetermined extent ofmotion in one direction to reverse the direction of motion, leatherworking mechanism, means for holdingthe free ends of saidtrack beamsswung toward saidmechanismduringone direction of motion of said bolsterand acting when the motion is reversed to move saidtree ends away fromsaid mechanism, and operator actuable meansfor moving said .tree endsaway from said mechanism and reversing the direction of motion of saidbolster a-tany time during its movement in said one direction.

j 32. In a machine otthe class described, a pair of spaced paralleltrack beams each pivoted at one end, a bolster over which leathermay beplaced reciprocable along said 'tracl: beams, means to move saidbolster,

means acting after a predetermined extent of motion in' one directiontoreverse the direc-' tion of motion, leather working. mechanism, meansfor holding the'free ends of said track beams swung toward saidmechanism during one direction of motion 01 said bolster and-actingwhenithe motion is reversed to move said free ends away fromsaidmechanism, and means for stopping the machine after apredeterminedextent of reversed motion of aid bolster; a

In machine of the class described, a

pair of spaced parallel track beams reach pivoted at oneend, a bolsterover Which leather may be placed reciprocable along said track beams,means to move said bolster, means acting after a predetermined extent ofmotion in one direction to reverse the direction of motion, leatherworking mech-, anism, means for holding the free ends 01" saidtrack"beams swung toward said mechanism during one direction out motion ofsaid bolster and acting when'the motion is reversed to move said freeends away from said mechanism, means for stopping the machine after apredetermined extent of reversedmotion of said bolster, and operatoractuable means for moving said free ends away from said mechanism andreversing the direction of motion of said bolster at any time duringitsmove'n'zent in said one direction.

34. In a machine otithe' class described,

pair of downwardly and forwardly inclined soaced parallel track beams, acarriage slida ile on each of said beams, a bolster over which leathermaybe placed pivoted to said carriages, means for holding said bolsterin substantially verticalposit'ion when said carriages are adgacent tothe lower ends ofsaid beams and'for tilting saidbolster rearwa-rdlysubstantially parallel to said; track beams as said carriagesmoveupwardly, a clamp engaging leather placed over said bolster as saidbolster-reaches its tilted position and movable therewith dnringitssubsequent motion, means tor'moving said carriages up said track beamsto determined positions, means acting automatically when the upper edgeof 7 ti (l said beams and for tilting said bolster rearwardlysubstantiallyparallel to said track beams as said carriages moveupwardly, a clamp engaging leather placed over the, upper edge ofsa-idbolster as said-bolster reaches its tilted position and movabletherewith during its subsequent motion, means for moving said carriagesup said track beams'to determined positions, means acting automaticallywhen said carriages reach said positions to reversetheir directions ofmotion,

is moved, means acting when said bolster reachesits initial lowestposition for stopping the machine, and operator actuable means foractuating said reversing means at any time before said carriages-havereached said predetermined positions.

36. in a machine ofthe class described, a pair of downwardly and;forwardly inclined spaced its upper end, a carriage slidable on-each ofsaid beams, a bolster over which leather may be placed pivoted to saidcarriages,

leather working meohanlsm past wh ch said bolster parallel track beamseach pivoted at means for holding saidbolster in substantially verticalposition when said carriages, are

adjacent to the lower ends of said beams and for tiltingsaidbolsteirearwardly substantially parallel to said-track beam as said carriagesmove'upwardly, aclamp engaging leather placed over the upper edge ofsaid bolsteras said bolster reaches its tilted position and'movabletherewith "during its subsequent mot1on,'means for moving said carriagesup; said track beams to deter, 'inmed posit ons, means actingautomat1cally when saidcarriag'es reach said positions to reverse theirdirections of motion, leather, working mechanism past whlch sa d bolsteris moved, meansfor holding the lower.

ends of said track beams forwardly durmg the upward motion of saidbolster i to cause said mechanism to act on the leather 'sition forstopping the machine;

and acting to move said lowerends rear- Wardly when the direction ofmotionis reversed, means actingwhe'n said bolster approaches its lowestposition for swinging said lower ends forwardly, and means act-- ingwhen said bolster reaches its lowest po- 37. In a machine of theclassdescribed, a

pair 0i downwardly and forwardly inclined spaced paralleltracl: beamseach pivoted at its upper end, a carriage shdablefon each of said beams,a bolster over which leather maybe placed pivoted to said carriages,

means for holding said bolster in substantiallyvertical positionWhen'said carrlages' are adj aoent to the lower ends of said beams andfor tilting said bolster rea'rwardly substantially parallel-t0 saidtrack beams as said carriages move upwardlma clamp en-.

gaging leather placed overthe upper edged} of'said bolster as saidbolster reaches its tilted position and movable "therewith dur-' ing itssubsequent motion, means for mov ing said carriages'up said track beamswas;

terfnined'positio11s',jmeans acting 'autoniat:

.icallywhen said carriages'reachsaid positions't'o reverse'their dlfwtlons of 1110131011,

leatherworking mechanism past which said bolsteris moved, means for:holding" the lower ends of said track beams j forwardly "luring'thegupw-ard motion of saidbolster to cause said mechanism to" act on;the leatlier and actingtomove said ;l0wer.ends1:rearwardlvwheu thedirection of'motion is re- 7 versed, means acting when said bolster approaches. its lowest pos1t1on ;for swinging said lower ends-forwardly,means acting= when said ,bolsterreaches itslowest position forstoppingthemachine, and operator control means actuable at any timeduring the In testimonywhereof we have, aflixed our signatures. v

'- rnnnnnrc n. CLEME JO IA WHEELER, JR.

